// Copyright (c) 2016 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

package bootstrap

import (
	"time"

	"github.com/m3db/m3/src/x/context"
)

type noOpBootstrapProcessProvider struct{}

// NewNoOpProcessProvider creates a no-op bootstrap process proivder.
func NewNoOpProcessProvider() ProcessProvider {
	return noOpBootstrapProcessProvider{}
}

func (b noOpBootstrapProcessProvider) SetBootstrapperProvider(provider BootstrapperProvider) {
}

func (b noOpBootstrapProcessProvider) BootstrapperProvider() BootstrapperProvider {
	return nil
}

func (b noOpBootstrapProcessProvider) Provide() (Process, error) {
	return noOpBootstrapProcess{}, nil
}

type noOpBootstrapProcess struct{}

func (b noOpBootstrapProcess) Run(
	ctx context.Context,
	start time.Time,
	namespaces []ProcessNamespace,
) (NamespaceResults, error) {
	// Run hooks if any for testing purposes.
	for _, ns := range namespaces {
		if err := ns.Hooks.BootstrapSourceBegin(); err != nil {
			return NamespaceResults{}, err
		}
		if err := ns.Hooks.BootstrapSourceEnd(); err != nil {
			return NamespaceResults{}, err
		}
	}
	return NewNamespaceResults(NewNamespaces(namespaces)), nil
}
